Best way to wipe device data before downgrading

Hi all, few questions:
1. What is the best way to wipe my device before downgrading the device?
2. Is it possible to downgrade os without wiping?
3. Alots of downgrades/upgrades and everything may damage the device some how?
Im using windows vista 64bit

Matan wrote:
1. so you say that if im upgrading from 4.6 to 5.0, and from some reason i want to downgrade to the 4.6, wiping the device (for example with jl cmd) is not neccecary?
Correct. It is not necessary. Many choose to do so, however. I, personally, have done so and not done so...with no difference that I could discern. That said, doing so also does no harm.
Matan wrote:
2. i meant to upgrades/downgrades mainly, lol.. never mind. so it wont damage some how to do that a few times?
"Damage" would imply something physical...you are wiping and re-writing electronic information. No "damage" therefore can occur.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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